Full 20-track edition. It has little bits of the dialogue at the start of some of the songs, I'm not sure if the highlights version has that. I think the main differences are that the full edition has the opening music, the beggar woman talking to Anthony outside the Judge's house, Timothy Spall's little song about stubble, and the whole 10 minute final scene (dialogue dispersed throughout, it's a bit weird).
Sadly it doesn't have the music from the closing credits on it which is a shame, because (despite being at the end) it's like an overture with all the key songs in it, it makes a nice summary of the whole picture.